Appendix D - Interconnect DiagramsApollo CNX80 Installation Manual 560-0982-00 Rev D D-252345 Turner Road S.E., Salem, OR 97302Phone: 503.581-8101 http://www.garminat.comGarmin AT, IncFULL STACKDUAL CNX80 / MX20 / SL15 / SL70CNX80 INSTALLATION DRAWINGNOTES:1. ALL WIRES 24 AWG OR LARGER UNLESS OTHERWISE SPECIFIED.2. AT GARMIN AT EQUIPMENT CONNECT SHIELD GROUNDS TO THE REAR OF THEMOUNTING FRAME ON THE CONNECTOR PLATE -- THE SHIELD LEADS MUST BE LESSTHAN 3.0 ". UNLESS OTHERWISE NOTED, CONNECT OTHER SHIELD GROUNDS TOAIRCRAFT CHASSIS WITH AS SHORT A CONDUCTOR AS PRACTICAL.3. CNX80 SERIAL PORT CONFIGURATION (RX / TX):SERIAL PORT 1: MAPMX / MAPMX (CNX80 #1 ONLY)SERIAL PORT 2: CNX80 / CNX80SERIAL PORT 6: SL70 / SL70SERIAL PORT 8: ALT ENC / ---4. MX20 EXTERNAL DATA SOURCE CONFIGURATION:EXTERNAL GPS POSITION SOURCE: PORT 1ALTITUDE SOURCE: PORT 1NAV SOURCE: NONE5. THE SL70/SL70R MUST HAVE SOFTWARE VERSION 1.3 OR HIGHER IF IT IS DESIREDTO HAVE BOTH CNX80'S REMOTELY CONTROL IT.SL70 SERIAL PORT CONFIGURATION:ALT SOURCE: SERBAUD: 9600TX: EXTSL70R: GRAY CODE ALT PGM PIN 36 MUST BE LEFT OPEN.6. EACH CNX80 SHOULD EACH HAVE ALTITUDE INPUT DIRECTLY. THE SL70/70R DOESNOT REQUIRE A DIRECT ALTITUDE CONNECTION, SINCE EITHER CNX80 CAN SUPPLYALTITUDE TO THE TRANSPONDER.7. ALTITUDE ENCODERS ARE NOT GARMIN AT-PROVIDED EQUIPMENT. REFER TO THEAPPROPRIATE ENCODER INSTALLATION MANUAL TO ENSURE PROPERCONNECTIONS.8. SHIELDS FOR AUDIO CABLES SHOULD BE GROUNDED AT ONE END AND LEFTFLOATING AT THE OTHER END. IF SHIELDED AUDIO CABLE IS CARRIED THROUGHDISCONNECT, CARRY SHIELD GROUND THROUGH DISCONNECT ON SEPARATE PIN.9. CNX80 RS232 CHANNEL 6 IS OPTO-ISOLATED, ALLOWING TXD6 FROM EACH CNX80TO BE CONNECTED IN PARALLEL.IF THE CNX80 MESSAGE AUDIO OUTPUT IS CONNECTED TO AN UNSWITCHED AUDIOINPUT, IT IS RECOMMENDED THAT THE THE SL15 AUDIO ACTIVE OUTPUT BECONNECTED. THIS OUTPUT IS ONLY AVAILABLE ON CERTAIN SL15 AUDIO PANELS.ALTERNATE CONNECTIONS ARE SHOWN ON THE SL10/SL15 AUDIO PANELINTERCONNECT DRAWING. CONSULT THIS INTERCONNECT DRAWING THEAPPROPRIATE INSTALLATION MANUAL FOR INFORMATION.THESE SIGNALS ALSO GO TO THE AUTOPILOT AS APPROPRIATE.12.THIS DIAGRAM IS PROVIDED TO SHOW THE INTERCONNECTION BETWEEN GARMINAT UNITS. FULL WIRING DIAGRAMS FOR EACH UNIT ARE PROVIDED IN THEAPPROPRIATE INSTALLATION MANUALS. REFER TO ALL DOCUMENTATION TOENSURE SUCCESSFUL INSTALLATION.THE AUDIO MESSAGE OUTPUT FROM CNX80 #2 SHOULD NOT BE CONNECTED.REFER TO SL10/SL15 AUDIO PANEL INTERCONNECT DIAGRAM FOR ADDITIONALINFORMATION ABOUT CONNECTING THE PA MUTE OUTPUT.Initial Release- 03/31/03DescriptionRev DateSL15AUDIO PANEL13BotNAV 2 AUDIO IN (HI)CNX80 #2(Nav/Com #2)2320 AUDIO GNDNAV AUDIO OUT13AUDIO GROUNDCNX80 #1(Nav/Com #1)14138742320COM MIC IN HIPTTCOM HEADPHONE OUTCOM AUDIO GNDCOM MIC IN LOWAUDIO GNDNAV AUDIO OUTP4P7NAV 1 AUDIO IN (HI)COM 1 AUDIO IN (HI)COM 1 MIC OUT (HI)COM 1 MIC KEY OUT129PR20TopAUDIO ACTIVE OUT 77 AUDIO INHIBIT INP5TUNSWITCHED AUDIO#1 IN (HI) 4043MESSAGE AUDIO OUTMESSAGE AUDIO GND10HVCOM 2 AUDIO IN (HI)COM 2 MIC OUT (HI)COM 2 MIC KEY OUT1413874MIC 1TX KEYHEADPHONEAUDIO GNDMIC GNDP7CDI / HSI #1(MD200-306 shown forreference)OBS_C {R Lo}OBS_D {S1}OBS_E {S3}BACK COURSEOBS_F {S4}OBS_G {S2}OBS_H {R Hi}1235461824 NAV ANNUNC17 GPS ANNUNC24726251516341718OBS_C {R Lo}OBS_D {S1}OBS_E {S3}BACK COURSEOBS_F {S4}OBS_G {S2}OBS_H {R Hi}GPS IND OUTNAV IND OUTMX2037-pin connectorP123SERIAL GND 1RS232 RXD1 45RS232 TXD12345PORT 1 GNDPORT 1 INPORT 1 OUT4P7CDI / HSI #2(MD200-306 shown forreference)OBS_C {R Lo}OBS_D {S1}OBS_E {S3}NAV + VALIDNAV - VALID+TO+FROMCDI + LCDI + RBACK COURSEOBS_F {S4}OBS_G {S2}OBS_H {R Hi}GS+ VALIDGS- VALIDGSI + UPGSI + DOWN123546781691015141112131824 NAV ANNUNC17 GPS ANNUNC2472625102912111413151634283230311718OBS_C {R Lo}OBS_D {S1}OBS_E {S3}MAIN CDI + VALIDMAIN CDI - VALIDMAIN CDI +TOMAIN CDI +FROMMAIN CDI + LMAIN CDI + RBACK COURSEOBS_F {S4}OBS_G {S2}OBS_H {R Hi}MAIN GS+ VALIDMAIN GS- VALIDMAIN GS + UPMAIN GS + DOWNGPS IND OUTNAV IND OUTAltitude Encoderor Digitizer4430SERIAL GND 7/8RS232 RXD8SerialAltitudeOutput67SERIAL GND 6SL70/70RSERIAL GNDRXDTXD1P542 345 5SERIAL GND 6P5424430SERIAL GND 7/8RS232 RXD8P123 SERIAL GND 2RS232 RXD22122 RS232 TXD2232122SERIAL GND 2RS232 RXD2RS232 TXD2P1P5TXD1GND88888883910P7P4610TXD2GND10RS232 TXD6 22RS232 RXD6 2RS232 RXD6 2RS232 TXD6 2222 TXD2SERIAL GND24NAV + VALIDNAV - VALIDCDI + LCDI + RGS+ VALIDGS- VALIDGSI + UPGSI + DOWN781615141112131029141328323031MAIN CDI + VALIDMAIN CDI - VALIDMAIN CDI + LMAIN CDI + RMAIN GS+ VALIDMAIN GS- VALIDMAIN GS + UPMAIN GS + DOWN+TO+FROM9101211MAIN CDI +TOMAIN CDI +FROM1111Clarified Note 5.A 05/16/03Added Note 13 for audio from2nd CNX80.B 06/20/03P54043MESSAGE AUDIO OUTMESSAGE AUDIO GNDN/CN/C131318PA MUTE (OUT)Added SL15 PA Mute outputconnection to CNX80. Updatedcompany name to Garmin AT innotes.C 08/25/031414Figure D- 12 - Full Stack with Dual CNX80s Interconnect Diagram